Might you still have the tools to remove the prechamber?
My 300td has about 250K miles are we are thinking to remove and clean the prechamber to improve performance. Is that what you did? Did you find a good source for a new prechamber should it become necessary?
Previously owned Pre-chamber Ring Removal tool and Pre-Chamber Puller set. For 617 Engines.
The puller has 22 x 1.0 external Threads (just like the Shimo Bicycle Hub Puller that people modify to make a puller) and is threaded inside for 5/8 x 18 threads pre inch and will fit the largest Slide Hammer that you can rent for Free at Auto Zone.
The Ring Removal/Installation tool is as seen in the pic and is best used with a ¾ or19mm 6 point Deep Socket. (For use on 615,616,617 Engines.)
Selling price is $75+$4 Shipping=total $79 shipped to the Lower 48 States and Canada (you are responsible for any Customs Duty).
I will provide some Instructions.
This add will also be posted at Peachparts.com/forum and is subject to prior sale.
For more details or questions please PM me.
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